servlets

Running servlets inside Equinox/Eclipse
  • Creating plug-in hosting servlet
    • Create new plug-in projectequinox_servlets_1
    • Add plug-in dependencies
      • javax.servlet
      • org.eclipse.equinox.http.registry
    • Add extension: org.eclipse.equinox.http.registry.servlets
    • Configure servlet mapping in extension definition 
      <?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
 
	<extension point="org.eclipse.equinox.http.registry.servlets">
		<servlet alias="/echo" class="servlets.EchoServlet" />
	</extension>
 
</plugin>
    • Create servlet class 
      package servlets;

package servlets;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class EchoServlet extends HttpServlet {

	private static final long serialVersionUID = 137926368689939745L;

	@Override
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) {

		String value = request.getParameter("value");
		PrintWriter writer;
		try {
			writer = response.getWriter();
			String outputText = "Echo Servlet inside Equinox/Eclipse says: "
					+ value;
			System.out.println(outputText);
			writer.write(outputText);
			writer.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}
}
  • Running plug-in hosting servlets in Eclipse IDE
    • Create new Run Configuration
    • Choose OSGi Framework
    • Deselect all preselected plug-ins from bundles list
    • Select only:
      • Newly created plug-in that’s hosting servlets
      • org.mortbay.jetty.server
      • org.eclipse.equinox.http.jetty
    • Use Add Required Bundles option
    • Save configuration and Run it
  • Using servlet